烷基多糖苷对甲烷水合物生成影响  

Influences of alkyl polyglucoside on formation of methane hydrate

作　　者：赵健龙 马贵阳[1] 潘振[1] 李文昭[1] ZHAO Jian-long;MA Gui-yang;PAN Zhen;LI Wen-zhao(Institute of Petroleum and Natural Gas Engineering,Liaoning Shihua University,Fushun 113001,Liaoning Province,China)

机构地区：[1]辽宁石油化工大学石油天然气工程学院,辽宁抚顺113001

出　　处：《化学工程》2018年第9期17-22,共6页Chemical Engineering(China)

基　　金：国家自然科学基金资助项目(41502100);辽宁省高等学校优秀人才支持计划项目(LR2013016);辽宁省自然科学基金资助项目(201602470)

摘　　要：烷基多糖苷(APG)是一种高效能、无毒性的非离子表面活性剂,它被广泛应用,尤其在水合物领域的研究更具有重要意义。通过实验,在改变质量浓度、初始压力、碳链长度3个条件下,分别研究了APG对甲烷水合物生成的影响。结果表明:合理地选取APG溶液的质量浓度可以有效地提高水合物的生成速率与储气密度,1 500 mg/L的溶液体系效果最佳,最终储气密度(体积分数)可达到138. 17;实验初始压力与最终储气密度存在着一定的线性规律,压力增大,最终的储气密度也随之增大;碳链的长度会影响水合物的生成过程,增加碳链长度可以提高水合物生成速率。因此,合理地选择表面活性剂的碳链长度、种类、质量浓度以及初始压力,可明显提高水合物生成速率与储气能力。Alkyl polyglucoside(APG)is an effective,non-toxic and non-ionic surfactant.It is widely used,especially in the area of hydrate.The effects of APG on the formation of methane hydrate were studied in the experiment under changing mass concentration,initial pressure and the length of carbon chain.The results show that the reasonable mass concentration of APG solution effectively improves the rate of formation and the gas density of hydrate.And the solution system of 1 500 mg/L works the best mass concentration to form hydrate,the final gas density(volume fraction)could reach 138.17.The experimental initial pressure and the final reservoir gas density have certain the linear rule,the gas density increases eventually with the pressure building up.The length of the carbon chain affects the formation of hydrates.The rate of formation of hydrate increases with the length of the carbon chain increasing.Reasonable choice of surfactant,mass concentration,initial pressure and the length of carbon chain improve the rate of formation and the storage capacity of hydrate greatly.

关 键 词：甲烷水合物 表面活性剂 储气密度 初始压力 碳链长度 

分 类 号：TE89[石油与天然气工程—油气储运工程]